frmusermanage.cs

一个好的系统 对初学者很有用啊 来看看啊

            this.ClientSize = new System.Drawing.Size(523, 357);
            this.ControlBox = false;
            this.Controls.Add(this.btnEdit);
            this.Controls.Add(this.lblExit);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.btnSave);
            this.Controls.Add(this.btnDelUser);
            this.Controls.Add(this.btnAddUser);
            this.Controls.Add(this.groupBox2);
            this.Controls.Add(this.groupBox1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "FrmUserManage";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "用户管理";
            this.Load += new System.EventHandler(this.FrmUserManage_Load);
            ((System.ComponentModel.ISupportInitialize)(this.dgUsers)).EndInit();
            this.groupBox1.ResumeLayout(false);
            this.groupBox2.ResumeLayout(false);
            this.groupBox2.PerformLayout();
            this.ResumeLayout(false);

		}
		#endregion

		private void MakeBind()
		{
			//方法：private void MakeBind()
			//参数：空
			//功能：1.返回所有的用户数据集dsUser
			//      2.将窗体的dgUsers与返回的数据集dsUser绑定
			//	    3.给滚动条UserScroller的属性DtSet赋值
			//返回：空
	
			//事例化业务逻辑类
			UserBLC userBlc = new UserBLC();
			//以数据集的形式返回用户表
			this.dsUser = userBlc.GetAllUser();
			this.dtUser = this.dsUser.Tables[0];

			
			//将窗体数据网格dgUsers与用户表绑定
			this.dgUsers.DataSource = this.dtUser;
			//给角色表临时添加一编号列
			DataColumn dcCurrent = new DataColumn("Current", typeof(int));
			this.dtUser.Columns.Add(dcCurrent);
			//给角色表编号列赋值
			int count = 1;
			foreach (DataRow row in this.dtUser.Rows)
			{
				row["Current"] = count++;
			}
			//设置窗体数据网格表现风格
			DataGridTableStyle dgStyle = new DataGridTableStyle();
			dgStyle.MappingName = this.dsUser.Tables[0].TableName;

			DataGridColumnStyle intCount = 
				new DataGridTextBoxColumn();
			intCount.MappingName = "Current";
			intCount.HeaderText = "  用户编号";
			intCount.Width = 75;
			dgStyle.GridColumnStyles.Add(intCount);

			DataGridColumnStyle ename = new DataGridTextBoxColumn();
			ename.MappingName = "userename";
			ename.HeaderText = "  用户英文名";
			ename.Width = 105;
			dgStyle.GridColumnStyles.Add(ename);

			DataGridColumnStyle cname = new DataGridTextBoxColumn();
			cname.MappingName = "usercname";
			cname.HeaderText = "  用户中文名";
			cname.Width = 105;
			dgStyle.GridColumnStyles.Add(cname);


			DataGridColumnStyle password = new DataGridTextBoxColumn();
			password.MappingName = "password";
			password.HeaderText = "        密码";
			password.Width = 163;
			dgStyle.GridColumnStyles.Add(password);

			this.dgUsers.TableStyles.Add(dgStyle);
			this.txtPassword.Enabled = false;
			this.txtUserCname.Enabled = false;
			this.txtUserEname.Enabled = false;
			this.btnAddUser.Enabled = true;
			this.btnDelUser.Enabled = true;
			this.btnEdit.Enabled = true;
            //this.btnAssignRole.Enabled = true;
			this.btnSave.Enabled = false;
			this.btnClick = BtnClick.SaveClick;
			//默认显示第一行
			if(this.dtUser.Rows.Count >0)
			{
				this.txtPassword.Text = this.dtUser.Rows[0]["password"].ToString();
				this.txtUserCname.Text = this.dtUser.Rows[0]["usercname"].ToString();
				this.txtUserEname.Text = this.dtUser.Rows[0]["userename"].ToString();
			}
			this.dgUsers.Enabled = true;
		}

		private void btnAddUser_Click(object sender, System.EventArgs e)
		{
			this.dgUsers.Enabled = false;
			//添加用户
			this.btnClick = BtnClick.AddClick;
			this.btnAddUser.Enabled = false;
			this.btnDelUser.Enabled = false;
			this.btnEdit.Enabled = false;
            //this.btnAssignRole.Enabled = false;
			this.btnSave.Enabled = true;

			this.drCurrent = this.dtUser.NewRow();
			this.drCurrent["password"] = "";
			this.drCurrent["usercname"] = "";
			this.drCurrent["userename"] = "";
			this.dtUser.Rows.Add(this.drCurrent);

			this.txtPassword.Text = "";
			this.txtUserCname.Text = "";
			this.txtUserEname.Text = "";
			this.txtPassword.Enabled = true;
			this.txtUserCname.Enabled = true;
			this.txtUserEname.Enabled = true;


			this.dgUsers.Refresh();
		
		}

		private void btnSave_Click(object sender, System.EventArgs e)
		{
			if(this.btnClick == BtnClick.AddClick)
			{
				foreach(DataRow dr in this.dtUser.Rows)
				{
					if(dr["userename"].ToString().Equals(this.txtUserEname.Text))
					{
						MessageBox.Show("此用户英文名在数据库中已存在，请输入另外一个英文名","警告");
						this.txtUserEname.Text = "";
						this.txtUserCname.Text = "";
						this.txtPassword.Text = "";
						return;
					}
				}
				this.drCurrent["password"] =  new UserBLC().EncryptPassword(this.txtPassword.Text);
				this.drCurrent["usercname"] = this.txtUserCname.Text;
				this.drCurrent["userename"] = this.txtUserEname.Text;

			}
			if(this.btnClick == BtnClick.EditClick)
			{
				foreach(DataRow dr in this.dtUser.Rows)
				{
					if(dr["userename"].ToString().Equals(this.txtUserEname.Text))
					{
						MessageBox.Show("此用户英文名在数据库中已存在，请输入另外一个英文名","警告");
						this.txtUserEname.Text = "";
						return;
					}
				}
				this.drCurrent["usercname"] = this.txtUserCname.Text;
				this.drCurrent["userename"] = this.txtUserEname.Text;
			}
			if(this.btnClick == BtnClick.DelClick)
			{
				//设置弹出对话框的模式
				string message = "你真要删除" +"“ "+  this.drCurrent["usercname"].ToString() +" ”"+"这个用户吗？ 取消这个操作？";
				string caption = "删除警告                                                                         ";
				MessageBoxButtons buttons = MessageBoxButtons.YesNo;
				DialogResult result;

				//显示对话框
				result = MessageBox.Show(this, message, caption, buttons,
					MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, 
					MessageBoxOptions.RightAlign);
				//确定删除
				if (result == DialogResult.Yes)
				{
					//删除选定用户
					this.drCurrent.Delete();
				}
			}
			//更新数据源
			UserBLC userBlc = new UserBLC();
			userBlc.UpdateUser(this.dsUser);
			//清除存在的数据网格风格
			DataGridTableStyle existingTableStyle = this.dgUsers.TableStyles[0];
			this.dgUsers.TableStyles.Remove(existingTableStyle); 
			//重新绑定
			MakeBind();
		}

		private void btnDelUser_Click(object sender, System.EventArgs e)
		{
			if(this.dgUsers.VisibleRowCount ==0)
				return;
			this.dgUsers.Enabled = false;
			this.btnClick = BtnClick.DelClick;
			this.btnAddUser.Enabled = false;
			this.btnDelUser.Enabled = false;
			this.btnEdit.Enabled = false;
            //this.btnAssignRole.Enabled = false;
			this.btnSave.Enabled = true;

			BindingManagerBase bm;
			bm = this.BindingContext[this.dtUser];
			this.drCurrent = this.dtUser.Rows[bm.Position];

			
		}

		private void btnAssignRole_Click(object sender, System.EventArgs e)
		{
			//给选定用户分配角色
			BindingManagerBase bm;
			bm = this.BindingContext[this.dtUser];
			DataRow dr = this.dtUser.Rows[bm.Position];
			int intUserId = Convert.ToInt32(dr["userID"]);
            //new ExamCenter.FormTier.FrmAssignRole(intUserId).Show();
		}

		private void lblExit_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}

		private void btnEdit_Click(object sender, System.EventArgs e)
		{
			//编辑用户
			if(this.dgUsers.VisibleRowCount ==0)
				return;
			this.dgUsers.Enabled = false;
			this.btnClick = BtnClick.EditClick;
			this.btnAddUser.Enabled = false;
			this.btnDelUser.Enabled = false;
			this.btnEdit.Enabled = false;
            //this.btnAssignRole.Enabled = false;
			this.btnSave.Enabled = true;

			BindingManagerBase bm;
			bm = this.BindingContext[this.dtUser];
			this.drCurrent = this.dtUser.Rows[bm.Position];
			this.drCurrent["userename"] ="";

//			this.txtPassword.Enabled = true;
			this.txtUserCname.Enabled = true;
			this.txtUserEname.Enabled = true;	
		}

		private void dgUsers_CurrentCellChanged(object sender, System.EventArgs e)
		{
			DataGridCell myCell;
			myCell = this.dgUsers.CurrentCell;
			DataTable myTable;
			myTable = (DataTable) this.dgUsers.DataSource;

			this.txtPassword.Text = myTable.Rows[myCell.RowNumber]["password"].ToString();
			this.txtUserCname.Text = myTable.Rows[myCell.RowNumber]["usercname"].ToString();
			this.txtUserEname.Text = myTable.Rows[myCell.RowNumber]["userename"].ToString();
		}

        private void FrmUserManage_Load(object sender, EventArgs e)
        {

        }
	}
}